Home / 20,957,378.09-28,920,960.81-11,664,800.06

Finding the Fourth Proportional to 20,957,378.09, 28,920,960.81 and 11,664,800.06

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Solution

The fourth proportional to 20,957,378.09, 28,920,960.81 and 11,664,800.06 is: 16,097,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957,378.09 : 28,920,960.81 = 11,664,800.06 : x
  2. Step 2: Convert to fraction form
    20,957,378.09/28,920,960.81 = 11,664,800.06/x
  3. Step 3: Cross multiply
    20,957,378.09x = 28,920,960.81 × 11,664,800.06
  4. Step 4: Simplify right side
    20,957,378.09x = 337,357,225,247,140.81
  5. Step 5: Solve for x
    x = 337,357,225,247,140.81/20,957,378.09
  6. Step 6: Final answer
    x = 16,097,301.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.